Fix: Add base64 decoding support for SSH key

.forgejo/workflows/deploy.yaml

@@ -138,7 +138,13 @@ jobs:
 
       - name: Setup SSH key
         run: |
-          printf '%s' "$DEPLOY_SSH_PRIVATE_KEY" | tr -d '\r' > ~/.ssh/id_ed25519
+          # Handle base64-encoded key (recommended) or raw key
+          mkdir -p ~/.ssh && chmod 700 ~/.ssh
+          if echo "$DEPLOY_SSH_PRIVATE_KEY" | base64 -d > ~/.ssh/id_ed25519 2>/dev/null; then
+            echo "Decoded base64 key"
+          else
+            printf '%s\n' "$DEPLOY_SSH_PRIVATE_KEY" > ~/.ssh/id_ed25519
+          fi
           chmod 600 ~/.ssh/id_ed25519
           ssh-keyscan -p "${DEPLOY_PORT:-22}" "${DEPLOY_HOST}" >> ~/.ssh/known_hosts 2>/dev/null || true